PerTronix Dougs Headers D3360 - Manual

Page 1 of 3
Part # 0110-003016 rev 1 8-17-2011 DSL
HEADER INSTALLATION INSTRUCTIONS
D3360
APPLICATION
1990
–1995 Chevrolet P30 Motorhome 454 V8 Throttle body Inj.
PART NUMBER: D3360
© PerTronix
thanks you for choosing
DOUG’S HEADERS, the best fitting, highest quality header on the market. In
order to realize the full potential of our good fit, please read and understand these instructions completely prior to starting work.
CHECK TO MAKE SURE YOU RECEIVED THE PROPER PARTS FOR YOUR APPLICATION. THE HEADER NUMBER WILL
BE STAMPED ON THE ENGINE FLANGE. IF YOU ARE UNSURE YOU HAVE RECEIVED THE PROPER PARTS CALL
BEFORE YOU START WORK.
BE SURE TO WORK SAFE! WHENEVER YOU WORK UNDER THE VEHICLE BE SURE THAT IT IS LOCATED ON LEVEL,
SOLID GROUND AND IS SUPPORTED BY ADEQUATE SAFETY STANDS!
REMEMBER: HOT ASPHALT WILL NOT SUPPORT MOST JACK STANDS!
Many factors affect the installation of headers, some of which are broken or aftermarket motor mounts, accidents that impact the
configuration of the frame, and/or the installation of different engines or aftermarket cylinder heads. Most installations require
some welding. If you are uncomfortable with welding operations, we recommend that you contact a professional exhaust
system specialist to install your new headers.
Attention Customers breaking in new engines: Due to the extreme heat generated during the break-in process, the
appearance of the ceramic coating may be altered in certain areas. The protection characteristics and thermal barrier properties
of the coating is never compromised. It is recommended that a cast iron manifold or old set of headers be used for this process.
Notice: The coating of these headers can be marred or scratched during installation. If the header needs to be returned and is
damaged, you will be charged for recoat.
DISASSEMBLY
1. Disconnect the negative battery cable from the battery.
2. If a car lift is not available, raise the vehicle 2 feet or higher and support it with adequate safety
stands. Make sure the vehicle is on a flat solid surface and is stable. If you use the leveling
jacks to raise the vehicle place safety stands under the vehicle also.
3. Remove the front tires and cover the “A” arms with fender covers or similar covering to protect
you from grease and dirt. It is easier to work on the engine through the wheel openings.
4. Apply penetrating oil to all nuts and bolts to be removed.
5. Unplug O
2
sensor wire and remove O
2
sensor from head pipe. Use care to not damage
the wire or the sensor.
6. Cut the head pipe about 2” ahead of the weld on the inlet side of the catalytic converter.
Unbolt and remove the head pipe.
Corporate Office: PerTronix Inc. 440 E. Arrow Highway, San Dimas, California 91773 * Phone 909.599.5955 * FAX 909.599.6424 * www.dougsheaders.com